Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

C Exercises: Convert a string to a double

C Variable Type : Exercise-14 with Solution

Write a C program to convert a string to a double.

Sample Solution:

C Code:

#include<stdio.h>
#include<stdlib.h>

int main ()
	{
		double num1,num2;
		char my_array [256];
		printf ( "\n Input a number : " );
		fgets (my_array, 256, stdin);	
		num1 = atof (my_array);
		num2 = num1/2;
		printf (" The original number is : %f \n", num1);
		printf (" After division by 2 the number is : %f\n\n", num2);
		return 0;
	}

Sample Output:

Input a number : 25                                                                                          
The original number is : 25.000000                                                                           
After division by 2 the number is : 12.500000  

Flowchart:

C Exercises Flowchart: Perform a binary search in an array

C Programming Code Editor:

Improve this sample solution and post your code through Disqus

Previous: Write a C program to convert a string to an integer.
Next: Write a C program to set a function that will be executed on termination of a program.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP